Maps

In my last blog post, Iwrote about variables, and in particular, primitives. Today I’m going to expand on variables and talk about the oh-so-powerful idea of “collections.”

Unlike Java, which only has one type of collection (Arrays, also know as a Lists), Apex has three to choose from: Lists, Sets, and Maps. Together, we’ll go into each of these types of collections and show you what they are best used for, and how to use them when you start coding.